I was always under the impression that GT serial numbers went something like this:

483xxxx

4 = april
83 = year
xxxx = frame number

I acquired a frameset with the serial number: 821004

Does this mean August, 1982 frame #1004?

Any help is appreciated

That's what I would say, yes.

KIW, yes, sometimes they numbered them like that. If the frameset has the straight cut top tube, solid dropouts, and undrilled front fork, then it would be a 1982.

Is there a seperate number (a 2, 4 or JR) stamped near the serial number as well?

Mine is numbered as 82195.

mcam...it is definitely a pro-sized frame (it has a seperate 4 on the dropout)...solid dropouts, undrilled fork.

I just thought that serial number was a little screwy.

Thanks guys!

I apologize for the hijack but it is related to the thread's issue.

What do you make of this SN?

12 21500

4

Seems a bit different that the others that have been discussed. Yes the frame is 18.5" and it has the straight cut top tube.

I would guess December, 1982 Maplebar

What are the top tube lengths of both the 83 pro and expert frames?? Thanks Scotty

Thanks KIW. I was just curious 'cause the 12 is separate from the 21500, same line, just a few spaces away. I figured 12/82 or 2/81. 12/82 makes more sense. Cool, and the search for parts begins.

Scotty,

The Pro is 18.5", and the Expert is 17". The Expert has a more laid back seat tube angle, and the back triangle is longer too.